package com.atguigu.gulimall.product.config;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;

/**
 * <简述>
 * <详细描述>
 *
 * @author syf
 * @date 2022年03月02日 11:01
 */
@Configuration//配置类
@EnableTransactionManagement//开启事务
@MapperScan("com.atguigu.gulimall.product.dao")
public class MyBatisConfig {
     //分页插件
     @Bean
     public PaginationInterceptor paginationInterceptor() {
         PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
         // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求  默认false
         paginationInterceptor.setOverflow(true);
         // 设置最大单页限制数量，默认 500 条，-1 不受限制
         paginationInterceptor.setLimit(1000);
         // 开启 count 的 join 优化,只针对部分 left join
         paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
         return paginationInterceptor;
     }
}
